On this day in 1945 – February 23rd – Ukranian astronomer Svetlana Gerasimenko was born.

Gerasimenko's name is well known because she was the co-discoverer of comet 67P/Churyumov-Gerasimenko. This was the comet explored by the Rosetta mission . Both the Rosetta spacecraft and the lander Philae are on the comet as it continues to orbit the Sun.